Page Layout/Systems submenu

Use these commands to update the layout and spacing of the staff systems in your document.

Edit Margins. Choose this command to display the Edit System Margins dialog box, which lists all the dimensions of staff systems. You can apply changes from this dialog box as well.
System Space Before/After Music. Choose this command to display the System Space Before/After Music dialog box, where you can specify additional space and the beginning or end of a staff system or region of systems.
Select Staff System Range. Choose this command to display the Select Staff Systems dialog box, where you can define a range of systems to adjust.